216586558168 has 16 divisors (see below), whose sum is σ = 410120588160. Its totient is φ = 107221068000.

The previous prime is 216586558163. The next prime is 216586558211. The reversal of 216586558168 is 861855685612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216586558163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134025528 + ... + 134027143.

It is an arithmetic number, because the mean of its divisors is an integer number (25632536760).

Almost surely, 2^216586558168 is an apocalyptic number.

It is an amenable number.

216586558168 is a deficient number, since it is larger than the sum of its proper divisors (193534029992).

216586558168 is a wasteful number, since it uses less digits than its factorization.

216586558168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268052778 (or 268052774 counting only the distinct ones).

The product of its digits is 27648000, while the sum is 61.

The spelling of 216586558168 in words is "two hundred sixteen billion, five hundred eighty-six million, five hundred fifty-eight thousand, one hundred sixty-eight".